Someone above made the assertion that, in post, you could adjust a 'sharp' image (implying the Sigma) to look like the rendering of the Nikkor 58. From real world images made with the 58mm which I have seen elsewhere, all I can say is "good luck with that."

Again, buy what moves you. There is a lot of heavy breathing going on in this thread which seems to imply that there are only two of these lenses vying for title of 'best', based on criteria that some seem exasperated not everyone shares. If I can paraphrase this worldview, "There is just no excuse in the year 2014 for the existence of an expensive 50 which is not so sharp that it can slice your retinas in half. Just no excuse." Well, since some people obviously prefer the Nikkor 58 rendering for certain applications, I guess there is an excuse.